#2C5588
Closest named color: Dusk Blue (#26538D). oklch(44.5% 0.096 255), rgb(44, 85, 136).
Aa
White text reads best on this color (7.60:1).
About this color
#2C5588 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.096 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.013 away. White text reads best on it, at 7.60:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.76:1 |
| White text | 7.60:1 |
Values
| HEX | #2C5588 |
| RGB | rgb(44, 85, 136) |
| HSL | hsl(213, 51%, 35%) |
| OKLCH | oklch(44.5% 0.096 255) |
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 #2C5588 | 7.60:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #2C5588 | 2.76:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #2C5588 text on white | 7.60:1 | AAA | Lc 86.2 | Fine for body text |
| #2C5588 text on black | 2.76:1 | Fails | Lc -15.9 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDBEE
oklch(88.6% 0.031 254.3)
-
Step 300
300
#A9C3E5
oklch(80.9% 0.056 255.2)
-
Step 400
400
#7AA3D8
oklch(70.6% 0.09 255.1)
-
Step 500
500
#578CCE
oklch(63.2% 0.115 254.7)
-
Step 600
600
#3C74BB
oklch(55.5% 0.126 255.4)
-
Step 700
700
#2E61A1
oklch(49% 0.117 255.4)
-
Step 800
800 (this color)
#2C5588
oklch(44.5% 0.096 255)
-
Step 900
900
#244369
oklch(37.8% 0.075 254.5)
-
Step 950
950
#16273D
oklch(27% 0.047 255.4)
#2C5588 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) | #3F588A | 0.024 |
| Deuteranopia (no green cones) | #325087 | 0.015 |
| Tritanopia (no blue cones) | #006168 | 0.077 |
| Achromatopsia (no color) | #545454 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C5588
#2C5588
oklch(44.5% 0.096 255)
- #724B00
#724B00
oklch(44.6% 0.094 74.9)
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 #2C5588, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.013
- Light Navy Blue #2E5A88 ΔE 0.016
- Light Navy #155084 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.029
- YInMn Blue #415A77 ΔE 0.042
- Dusk #4E5481 ΔE 0.042
- Twilight #4E518B ΔE 0.043
Use #2C5588 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.