#677CF3
Closest named color: Cornflower (#6A79F7). oklch(63% 0.178 272.7), rgb(103, 124, 243).
Aa
Black text reads best on this color (5.75:1).
About this color
#677CF3 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.178 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.010 away. Black text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.75:1 |
| White text | 3.64:1 |
Values
| HEX | #677CF3 |
| RGB | rgb(103, 124, 243) |
| HSL | hsl(231, 85%, 68%) |
| OKLCH | oklch(63% 0.178 272.7) |
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 #677CF3 | 3.64:1 | AA large text | Lc -69.3 | Content text, not long reading |
| Black text on #677CF3 | 5.75:1 | AA | Lc 40.3 | Non-text elements, placeholder text |
| #677CF3 text on white | 3.64:1 | AA large text | Lc 63.8 | Content text, not long reading |
| #677CF3 text on black | 5.75:1 | AA | Lc -37.9 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBDFA
oklch(80.8% 0.088 272.9)
-
Step 400
400
#8499F7
oklch(70.7% 0.14 272.8)
-
Step 500
500 (this color)
#677CF3
oklch(63% 0.178 272.7)
-
Step 600
600
#5162E2
oklch(55.6% 0.194 272.7)
-
Step 700
700
#4250C5
oklch(49.1% 0.181 272.6)
-
Step 800
800
#36429F
oklch(42.6% 0.15 272.7)
-
Step 900
900
#2E397E
oklch(37.6% 0.117 272.7)
-
Step 950
950
#1B224A
oklch(27% 0.074 273)
#677CF3 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) | #3F8CF7 | 0.050 |
| Deuteranopia (no green cones) | #2680F0 | 0.056 |
| Tritanopia (no blue cones) | #0097AC | 0.157 |
| Achromatopsia (no color) | #868686 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677CF3
#677CF3
oklch(63% 0.178 272.7)
- #A48600
#A48600
oklch(63% 0.129 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 #677CF3, closest first.
No curated palette has a color within ΔE 0.04 of #677CF3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.010
- Soft Blue #6488EA ΔE 0.035
- Medium Slate Blue #7B68EE ΔE 0.051
- Periwinkle #8E82FE ΔE 0.059
- Lavender Blue #8B88F8 ΔE 0.060
- Clear Blue #247AFD ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.066
Use #677CF3 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.