#2D5379
Closest named color: Deep Sea Blue (#015482). oklch(43.2% 0.077 250), rgb(45, 83, 121).
Aa
White text reads best on this color (8.00:1).
About this color
#2D5379 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.077 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.028 away. White text reads best on it, at 8.00:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #2D5379 |
| RGB | rgb(45, 83, 121) |
| HSL | hsl(210, 46%, 33%) |
| OKLCH | oklch(43.2% 0.077 250) |
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 #2D5379 | 8.00:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #2D5379 | 2.62:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #2D5379 text on white | 8.00:1 | AAA | Lc 87.6 | Fine for body text |
| #2D5379 text on black | 2.62:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ABC3DD
oklch(80.8% 0.045 250.5)
-
Step 400
400
#7EA4CC
oklch(70.6% 0.072 250.2)
-
Step 500
500
#5D8DBF
oklch(63% 0.092 250.4)
-
Step 600
600
#4277AB
oklch(55.6% 0.099 249.6)
-
Step 700
700
#346493
oklch(49.2% 0.092 249.8)
-
Step 800
800 (this color)
#2D5379
oklch(43.2% 0.077 250)
-
Step 900
900
#284460
oklch(37.8% 0.059 249.6)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#2D5379 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) | #43557B | 0.028 |
| Deuteranopia (no green cones) | #394D78 | 0.021 |
| Tritanopia (no blue cones) | #005C60 | 0.064 |
| Achromatopsia (no color) | #515151 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5379
#2D5379
oklch(43.2% 0.077 250)
- #6B481B
#6B481B
oklch(43.2% 0.077 69.8)
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 #2D5379, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.028
- Light Navy #155084 ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.029
- Dusk Blue #26538D ΔE 0.034
- YInMn Blue #415A77 ΔE 0.035
- Dusk #4E5481 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.048
- Twilight #4E518B ΔE 0.054
Use #2D5379 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.