#153E51
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.4% 0.056 231.7), rgb(21, 62, 81).
Aa
White text reads best on this color (11.41:1).
About this color
#153E51 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.056 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.013 away. White text reads best on it, at 11.41:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.83:1 |
| White text | 11.41:1 |
Values
| HEX | #153E51 |
| RGB | rgb(21, 62, 81) |
| HSL | hsl(199, 59%, 20%) |
| OKLCH | oklch(34.4% 0.056 231.7) |
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 #153E51 | 11.41:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #153E51 | 1.83:1 | Fails | Lc 7.8 | Not readable |
| #153E51 text on white | 11.41:1 | AAA | Lc 96.1 | Preferred for body text |
| #153E51 text on black | 1.83:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A6C6D7
oklch(80.9% 0.042 231.1)
-
Step 400
400
#75A9C3
oklch(70.8% 0.067 230.6)
-
Step 500
500
#4E93B4
oklch(63.1% 0.086 231)
-
Step 600
600
#2E7CA0
oklch(55.5% 0.093 232.1)
-
Step 700
700
#206989
oklch(49.1% 0.086 231.5)
-
Step 800
800
#1D566F
oklch(42.8% 0.071 230.8)
-
Step 900
900 (this color)
#153E51
oklch(34.4% 0.056 231.7)
-
Step 950
950
#132A35
oklch(27.2% 0.035 230.7)
#153E51 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) | #353D52 | 0.038 |
| Deuteranopia (no green cones) | #2C3751 | 0.032 |
| Tritanopia (no blue cones) | #004344 | 0.035 |
| Achromatopsia (no color) | #3A3A3A | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #153E51
#153E51
oklch(34.4% 0.056 231.7)
- #50301D
#50301D
oklch(34.4% 0.056 50.7)
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 #153E51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.013
- Midnight Green #073B4C ΔE 0.017
- Charcoal #264653 ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.038
- Onyx #343A40 ΔE 0.043
- Gunmetal #293241 ΔE 0.044
- Dark Teal #014D4E ΔE 0.052
Use #153E51 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.