#153E4B
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.1% 0.05 222.2), rgb(21, 62, 75).
Aa
White text reads best on this color (11.52:1).
About this color
#153E4B is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.050 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.014 away. White text reads best on it, at 11.52:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.82:1 |
| White text | 11.52:1 |
Values
| HEX | #153E4B |
| RGB | rgb(21, 62, 75) |
| HSL | hsl(194, 56%, 19%) |
| OKLCH | oklch(34.1% 0.05 222.2) |
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 #153E4B | 11.52:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #153E4B | 1.82:1 | Fails | Lc 7.5 | Not readable |
| #153E4B text on white | 11.52:1 | AAA | Lc 96.3 | Preferred for body text |
| #153E4B 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A7C7D2
oklch(81% 0.038 220.6)
-
Step 400
400
#76AABC
oklch(70.8% 0.061 221.5)
-
Step 500
500
#5094AB
oklch(63.1% 0.077 222.2)
-
Step 600
600
#307E97
oklch(55.6% 0.084 222.7)
-
Step 700
700
#216A80
oklch(49% 0.078 222.1)
-
Step 800
800
#1E5768
oklch(42.7% 0.064 221.2)
-
Step 900
900 (this color)
#153E4B
oklch(34.1% 0.05 222.2)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#153E4B 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) | #363C4C | 0.040 |
| Deuteranopia (no green cones) | #2F374B | 0.036 |
| Tritanopia (no blue cones) | #004242 | 0.027 |
| Achromatopsia (no color) | #393939 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #153E4B
#153E4B
oklch(34.1% 0.05 222.2)
- #4E2F23
#4E2F23
oklch(34% 0.05 41.9)
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 #153E4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.014
- Midnight Green #073B4C ΔE 0.015
- Charcoal #264653 ΔE 0.035
- Onyx #343A40 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.042
- Gunmetal #293241 ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.043
- Dark Teal #014D4E ΔE 0.049
Use #153E4B 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.