#2D557F
Closest named color: Light Navy Blue (#2E5A88). oklch(44.1% 0.083 251.3), rgb(45, 85, 127).
Aa
White text reads best on this color (7.72:1).
About this color
#2D557F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.083 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.019 away. White text reads best on it, at 7.72:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.71:1 |
| White text | 7.72:1 |
Values
| HEX | #2D557F |
| RGB | rgb(45, 85, 127) |
| HSL | hsl(211, 48%, 34%) |
| OKLCH | oklch(44.1% 0.083 251.3) |
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 #2D557F | 7.72:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #2D557F | 2.71:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #2D557F text on white | 7.72:1 | AAA | Lc 86.7 | Fine for body text |
| #2D557F text on black | 2.71:1 | Fails | Lc -15.4 | Dividers and decoration only |
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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#AAC3E0
oklch(80.8% 0.049 252.3)
-
Step 400
400
#7CA4D0
oklch(70.6% 0.078 251.3)
-
Step 500
500
#5A8DC4
oklch(63.1% 0.1 251.4)
-
Step 600
600
#3F76B0
oklch(55.5% 0.108 251.5)
-
Step 700
700
#316398
oklch(49.1% 0.101 251.8)
-
Step 800
800 (this color)
#2D557F
oklch(44.1% 0.083 251.3)
-
Step 900
900
#264363
oklch(37.6% 0.065 252.1)
-
Step 950
950
#17283A
oklch(27.1% 0.041 250.8)
#2D557F 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) | #435781 | 0.028 |
| Deuteranopia (no green cones) | #384F7E | 0.020 |
| Tritanopia (no blue cones) | #005F64 | 0.068 |
| Achromatopsia (no color) | #535353 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D557F
#2D557F
oklch(44.1% 0.083 251.3)
- #6F4A15
#6F4A15
oklch(44.1% 0.083 71.5)
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 #2D557F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.019
- Dusk Blue #26538D ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.027
- Light Navy #155084 ΔE 0.028
- YInMn Blue #415A77 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.038
- Dusk #4E5481 ΔE 0.042
- Denim #3B638C ΔE 0.048
Use #2D557F 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.