#677AE0
Closest named color: Cornflower (#6A79F7). oklch(61.4% 0.155 273.1), rgb(103, 122, 224).
Aa
Black text reads best on this color (5.43:1).
About this color
#677AE0 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.155 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.035 away. Black text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #677AE0 |
| RGB | rgb(103, 122, 224) |
| HSL | hsl(231, 66%, 64%) |
| OKLCH | oklch(61.4% 0.155 273.1) |
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 #677AE0 | 3.86:1 | AA large text | Lc -71.4 | Content text, not long reading |
| Black text on #677AE0 | 5.43:1 | AA | Lc 38.2 | Non-text elements, placeholder text |
| #677AE0 text on white | 3.86:1 | AA large text | Lc 65.9 | Content text, not long reading |
| #677AE0 text on black | 5.43:1 | AA | Lc -35.8 | 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
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F6
oklch(88.6% 0.042 273.7)
-
Step 300
300
#B0BEF2
oklch(80.9% 0.075 272.9)
-
Step 400
400
#889BEC
oklch(70.8% 0.121 272.9)
-
Step 500
500 (this color)
#677AE0
oklch(61.4% 0.155 273.1)
-
Step 600
600
#5566D4
oklch(55.5% 0.169 273)
-
Step 700
700
#4654B8
oklch(49.1% 0.157 273.2)
-
Step 800
800
#394695
oklch(42.8% 0.13 272.7)
-
Step 900
900
#313B76
oklch(37.6% 0.101 273.4)
-
Step 950
950
#1C2345
oklch(26.9% 0.064 272.7)
#677AE0 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) | #4C87E4 | 0.040 |
| Deuteranopia (no green cones) | #3D7DDE | 0.044 |
| Tritanopia (no blue cones) | #2990A2 | 0.137 |
| Achromatopsia (no color) | #828282 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677AE0
#677AE0
oklch(61.4% 0.155 273.1)
- #9E8100
#9E8100
oklch(61.3% 0.125 93)
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 #677AE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.035
- Soft Blue #6488EA ΔE 0.036
- Medium Slate Blue #7B68EE ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.057
- Medium Purple #9370DB ΔE 0.065
- Royal Blue #4169E1 ΔE 0.066
- Dark Periwinkle #665FD1 ΔE 0.068
- Cornflower Blue #6495ED ΔE 0.069
Use #677AE0 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.