#677BE9
Closest named color: Cornflower (#6A79F7). oklch(62.1% 0.166 272.9), rgb(103, 123, 233).
Aa
Black text reads best on this color (5.58:1).
About this color
#677BE9 is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.166 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.023 away. Black text reads best on it, at 5.58:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.58:1 |
| White text | 3.75:1 |
Values
| HEX | #677BE9 |
| RGB | rgb(103, 123, 233) |
| HSL | hsl(231, 75%, 66%) |
| OKLCH | oklch(62.1% 0.166 272.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #677BE9 | 3.75:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #677BE9 | 5.58:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #677BE9 text on white | 3.75:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #677BE9 text on black | 5.58:1 | AA | Lc -36.8 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBEF6
oklch(81% 0.081 272.8)
-
Step 400
400
#869AF1
oklch(70.7% 0.129 272.9)
-
Step 500
500 (this color)
#677BE9
oklch(62.1% 0.166 272.9)
-
Step 600
600
#5364DB
oklch(55.5% 0.181 272.9)
-
Step 700
700
#4452BE
oklch(49% 0.169 272.9)
-
Step 800
800
#38449A
oklch(42.7% 0.14 273)
-
Step 900
900
#303A7A
oklch(37.6% 0.109 273.4)
-
Step 950
950
#1C2347
oklch(27.1% 0.067 272.9)
#677BE9 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4789ED | 0.044 |
| Deuteranopia (no green cones) | #347EE7 | 0.049 |
| Tritanopia (no blue cones) | #1894A7 | 0.148 |
| Achromatopsia (no color) | #848484 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677BE9
#677BE9
oklch(62.1% 0.166 272.9)
- #A18300
#A18300
oklch(62% 0.127 92.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #677BE9, closest first.
No curated palette has a color within ΔE 0.04 of #677BE9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.023
- Soft Blue #6488EA ΔE 0.033
- Medium Slate Blue #7B68EE ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.058
- Lavender Blue #8B88F8 ΔE 0.065
- Clear Blue #247AFD ΔE 0.065
- Periwinkle #8E82FE ΔE 0.066
- Cornflower Blue #6495ED ΔE 0.066
Use #677BE9 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.