#2C557B
Closest named color: Light Navy Blue (#2E5A88). oklch(43.8% 0.078 248.4), rgb(44, 85, 123).
Aa
White text reads best on this color (7.79:1).
About this color
#2C557B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.078 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.024 away. White text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #2C557B |
| RGB | rgb(44, 85, 123) |
| HSL | hsl(209, 47%, 33%) |
| OKLCH | oklch(43.8% 0.078 248.4) |
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 #2C557B | 7.79:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #2C557B | 2.69:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #2C557B text on white | 7.79:1 | AAA | Lc 86.9 | Fine for body text |
| #2C557B text on black | 2.69:1 | Fails | Lc -15.2 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#AAC4DD
oklch(80.9% 0.045 247.3)
-
Step 400
400
#7CA5CD
oklch(70.7% 0.074 248.3)
-
Step 500
500
#5A8EC0
oklch(63.1% 0.094 248.6)
-
Step 600
600
#3F77AC
oklch(55.5% 0.102 249)
-
Step 700
700
#306494
oklch(49% 0.095 248.7)
-
Step 800
800 (this color)
#2C557B
oklch(43.8% 0.078 248.4)
-
Step 900
900
#264460
oklch(37.7% 0.06 248.1)
-
Step 950
950
#172838
oklch(27% 0.038 247.9)
#2C557B 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) | #45567D | 0.031 |
| Deuteranopia (no green cones) | #3A4F7A | 0.022 |
| Tritanopia (no blue cones) | #005E62 | 0.063 |
| Achromatopsia (no color) | #525252 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C557B
#2C557B
oklch(43.8% 0.078 248.4)
- #6E491C
#6E491C
oklch(43.8% 0.078 68.2)
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 #2C557B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.027
- Light Navy #155084 ΔE 0.031
- YInMn Blue #415A77 ΔE 0.031
- Dusk Blue #26538D ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.044
- Dusk #4E5481 ΔE 0.044
- Denim #3B638C ΔE 0.051
Use #2C557B 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.