#2D556A
Closest named color: YInMn Blue (#415A77). oklch(42.9% 0.057 233.2), rgb(45, 85, 106).
Aa
White text reads best on this color (8.01:1).
About this color
#2D556A is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.057 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.036 away. White text reads best on it, at 8.01:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.61:1 |
| White text | 8.01:1 |
Values
| HEX | #2D556A |
| RGB | rgb(45, 85, 106) |
| HSL | hsl(201, 40%, 30%) |
| OKLCH | oklch(42.9% 0.057 233.2) |
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 #2D556A | 8.01:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #2D556A | 2.61:1 | Fails | Lc 16.3 | Dividers and decoration only |
| #2D556A text on white | 8.01:1 | AAA | Lc 87.7 | Fine for body text |
| #2D556A text on black | 2.61:1 | Fails | Lc -14.5 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE4
oklch(88.6% 0.019 232.5)
-
Step 300
300
#ACC5D3
oklch(80.9% 0.034 232.3)
-
Step 400
400
#80A7BD
oklch(70.8% 0.053 233.2)
-
Step 500
500
#5E91AC
oklch(63.1% 0.068 232.4)
-
Step 600
600
#437B98
oklch(55.7% 0.074 232.8)
-
Step 700
700
#356782
oklch(49.1% 0.069 234.2)
-
Step 800
800 (this color)
#2D556A
oklch(42.9% 0.057 233.2)
-
Step 900
900
#284655
oklch(37.7% 0.044 231.3)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#2D556A 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) | #4B546B | 0.038 |
| Deuteranopia (no green cones) | #424E6A | 0.032 |
| Tritanopia (no blue cones) | #015B5C | 0.044 |
| Achromatopsia (no color) | #505050 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D556A
#2D556A
oklch(42.9% 0.057 233.2)
- #694731
#694731
oklch(43% 0.058 53.5)
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 #2D556A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.036
- Petrol #005F6A ΔE 0.037
- Deep Teal #00555A ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Light Navy #155084 ΔE 0.053
Use #2D556A 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.