#253B50
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.4% 0.046 248.2), rgb(37, 59, 80).
Aa
White text reads best on this color (11.53:1).
About this color
#253B50 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.046 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.009 away. White text reads best on it, at 11.53:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.82:1 |
| White text | 11.53:1 |
Values
| HEX | #253B50 |
| RGB | rgb(37, 59, 80) |
| HSL | hsl(209, 37%, 23%) |
| OKLCH | oklch(34.4% 0.046 248.2) |
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 #253B50 | 11.53:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #253B50 | 1.82:1 | Fails | Lc 7.4 | Not readable |
| #253B50 text on white | 11.53:1 | AAA | Lc 96.5 | Preferred for body text |
| #253B50 text on black | 1.82:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE6
oklch(88.6% 0.019 248)
-
Step 300
300
#B0C3D7
oklch(80.9% 0.035 249.6)
-
Step 400
400
#86A4C2
oklch(70.7% 0.055 248.6)
-
Step 500
500
#678DB3
oklch(63% 0.072 249)
-
Step 600
600
#4E779F
oklch(55.6% 0.078 248.8)
-
Step 700
700
#3E6488
oklch(49.1% 0.073 248.2)
-
Step 800
800
#34526E
oklch(42.8% 0.059 247.7)
-
Step 900
900 (this color)
#253B50
oklch(34.4% 0.046 248.2)
-
Step 950
950
#1B2834
oklch(27.1% 0.029 246.9)
#253B50 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) | #323C51 | 0.019 |
| Deuteranopia (no green cones) | #2D3750 | 0.016 |
| Tritanopia (no blue cones) | #114042 | 0.040 |
| Achromatopsia (no color) | #393939 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #253B50
#253B50
oklch(34.4% 0.046 248.2)
- #49341D
#49341D
oklch(34.3% 0.047 67.7)
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 #253B50, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.009
- Midnight Green #073B4C ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.028
- Onyx #343A40 ΔE 0.033
- Gunmetal #293241 ΔE 0.034
- Charcoal #264653 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.046
Use #253B50 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.