#2D5B71
Closest named color: YInMn Blue (#415A77). oklch(44.8% 0.062 231.1), rgb(45, 91, 113).
Aa
White text reads best on this color (7.37:1).
About this color
#2D5B71 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.062 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.026 away. White text reads best on it, at 7.37:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.84:1 |
| White text | 7.37:1 |
Values
| HEX | #2D5B71 |
| RGB | rgb(45, 91, 113) |
| HSL | hsl(199, 43%, 31%) |
| OKLCH | oklch(44.8% 0.062 231.1) |
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 #2D5B71 | 7.37:1 | AAA | Lc -90.3 | Preferred for body text |
| Black text on #2D5B71 | 2.84:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #2D5B71 text on white | 7.37:1 | AAA | Lc 85.5 | Fine for body text |
| #2D5B71 text on black | 2.84:1 | Fails | Lc -16.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#AAC5D4
oklch(80.8% 0.036 232.2)
-
Step 400
400
#7CA8BE
oklch(70.8% 0.057 230.2)
-
Step 500
500
#5892AE
oklch(63.1% 0.074 230.4)
-
Step 600
600
#3C7C9A
oklch(55.7% 0.08 230.9)
-
Step 700
700
#2D6883
oklch(49% 0.075 230.8)
-
Step 800
800 (this color)
#2D5B71
oklch(44.8% 0.062 231.1)
-
Step 900
900
#254657
oklch(37.7% 0.048 232.5)
-
Step 950
950
#162933
oklch(26.9% 0.031 232.5)
#2D5B71 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) | #505A72 | 0.043 |
| Deuteranopia (no green cones) | #465371 | 0.036 |
| Tritanopia (no blue cones) | #006162 | 0.044 |
| Achromatopsia (no color) | #565656 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5B71
#2D5B71
oklch(44.8% 0.062 231.1)
- #704B34
#704B34
oklch(44.8% 0.061 52.4)
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 #2D5B71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.026
- Petrol #005F6A ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.048
- Denim #3B638C ΔE 0.050
- Dusty Grape #545775 ΔE 0.051
- Dark Aqua #05696B ΔE 0.051
- Deep Teal #00555A ΔE 0.052
Use #2D5B71 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.