#2C556E
Closest named color: YInMn Blue (#415A77). oklch(43.1% 0.062 237.4), rgb(44, 85, 110).
Aa
White text reads best on this color (7.97:1).
About this color
#2C556E is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.062 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.033 away. White text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #2C556E |
| RGB | rgb(44, 85, 110) |
| HSL | hsl(203, 43%, 30%) |
| OKLCH | oklch(43.1% 0.062 237.4) |
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 #2C556E | 7.97:1 | AAA | Lc -92.2 | Preferred for body text |
| Black text on #2C556E | 2.63:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #2C556E text on white | 7.97:1 | AAA | Lc 87.5 | Fine for body text |
| #2C556E text on black | 2.63:1 | Fails | Lc -14.6 | Not readable |
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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDBE5
oklch(88.4% 0.02 238.7)
-
Step 300
300
#ACC5D6
oklch(81% 0.036 237.7)
-
Step 400
400
#7FA7C1
oklch(70.8% 0.058 237.1)
-
Step 500
500
#5D90B1
oklch(63% 0.074 237.9)
-
Step 600
600
#417A9D
oklch(55.6% 0.081 237.6)
-
Step 700
700
#336786
oklch(49.2% 0.075 237.1)
-
Step 800
800 (this color)
#2C556E
oklch(43.1% 0.062 237.4)
-
Step 900
900
#274558
oklch(37.6% 0.049 237.8)
-
Step 950
950
#182934
oklch(27.1% 0.031 237.8)
#2C556E 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) | #49556F | 0.036 |
| Deuteranopia (no green cones) | #404E6E | 0.030 |
| Tritanopia (no blue cones) | #005B5D | 0.047 |
| Achromatopsia (no color) | #515151 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C556E
#2C556E
oklch(43.1% 0.062 237.4)
- #6A472D
#6A472D
oklch(43.1% 0.062 56.8)
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 #2C556E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.033
- Petrol #005F6A ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.043
- Deep Teal #00555A ΔE 0.046
- Light Navy #155084 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.052
Use #2C556E 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.