#677FD2
Closest named color: Soft Blue (#6488EA). oklch(61.5% 0.129 270.1), rgb(103, 127, 210).
Aa
Black text reads best on this color (5.54:1).
About this color
#677FD2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.129 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.039 away. Black text reads best on it, at 5.54:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.54:1 |
| White text | 3.78:1 |
Values
| HEX | #677FD2 |
| RGB | rgb(103, 127, 210) |
| HSL | hsl(227, 54%, 61%) |
| OKLCH | oklch(61.5% 0.129 270.1) |
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 #677FD2 | 3.78:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #677FD2 | 5.54:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #677FD2 text on white | 3.78:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #677FD2 text on black | 5.54:1 | AA | Lc -36.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B1BFEA
oklch(80.8% 0.063 270.8)
-
Step 400
400
#889DE0
oklch(70.6% 0.101 270.3)
-
Step 500
500 (this color)
#677FD2
oklch(61.5% 0.129 270.1)
-
Step 600
600
#546CC5
oklch(55.7% 0.14 270)
-
Step 700
700
#455AAA
oklch(49.2% 0.13 270)
-
Step 800
800
#384A8A
oklch(42.8% 0.108 269.6)
-
Step 900
900
#303E6E
oklch(37.7% 0.084 269.8)
-
Step 950
950
#1C2540
oklch(27.1% 0.052 268.8)
#677FD2 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) | #5E88D5 | 0.024 |
| Deuteranopia (no green cones) | #537FD0 | 0.023 |
| Tritanopia (no blue cones) | #37919E | 0.116 |
| Achromatopsia (no color) | #838383 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #677FD2
#677FD2
oklch(61.5% 0.129 270.1)
- #A28000
#A28000
oklch(61.5% 0.126 89.9)
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 #677FD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.051
- Faded Blue #658CBB ΔE 0.056
- Cool Blue #4984B8 ΔE 0.057
- Cornflower #6A79F7 ΔE 0.060
- Steel Blue #4682B4 ΔE 0.062
- Windows Blue #3778BF ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.064
Use #677FD2 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.