#2B5A73
Closest named color: YInMn Blue (#415A77). oklch(44.6% 0.066 234.1), rgb(43, 90, 115).
Aa
White text reads best on this color (7.46:1).
About this color
#2B5A73 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.066 and its hue 234°. 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 7.46:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #2B5A73 |
| RGB | rgb(43, 90, 115) |
| HSL | hsl(201, 46%, 31%) |
| OKLCH | oklch(44.6% 0.066 234.1) |
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 #2B5A73 | 7.46:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #2B5A73 | 2.81:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #2B5A73 text on white | 7.46:1 | AAA | Lc 85.8 | Fine for body text |
| #2B5A73 text on black | 2.81:1 | Fails | Lc -16.3 | 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
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C5D6
oklch(80.8% 0.039 234.6)
-
Step 400
400
#7BA7C1
oklch(70.6% 0.061 234.7)
-
Step 500
500
#5791B2
oklch(63% 0.079 234.9)
-
Step 600
600
#3A7B9E
oklch(55.5% 0.086 234.8)
-
Step 700
700
#2C6887
oklch(49.2% 0.079 234.2)
-
Step 800
800 (this color)
#2B5A73
oklch(44.6% 0.066 234.1)
-
Step 900
900
#244659
oklch(37.7% 0.051 234.9)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#2B5A73 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) | #4E5974 | 0.042 |
| Deuteranopia (no green cones) | #445273 | 0.035 |
| Tritanopia (no blue cones) | #006162 | 0.047 |
| Achromatopsia (no color) | #555555 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5A73
#2B5A73
oklch(44.6% 0.066 234.1)
- #704A30
#704A30
oklch(44.6% 0.065 54.6)
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 #2B5A73, 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 0.033
- Light Navy Blue #2E5A88 ΔE 0.036
- Deep Sea Blue #015482 ΔE 0.042
- Denim #3B638C ΔE 0.050
- Light Navy #155084 ΔE 0.051
- Dusty Grape #545775 ΔE 0.051
- Deep Teal #00555A ΔE 0.053
Use #2B5A73 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.