#153D4C
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.9% 0.051 226.2), rgb(21, 61, 76).
Aa
White text reads best on this color (11.64:1).
About this color
#153D4C is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.051 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.011 away. White text reads best on it, at 11.64:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.80:1 |
| White text | 11.64:1 |
Values
| HEX | #153D4C |
| RGB | rgb(21, 61, 76) |
| HSL | hsl(196, 57%, 19%) |
| OKLCH | oklch(33.9% 0.051 226.2) |
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 #153D4C | 11.64:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #153D4C | 1.80:1 | Fails | Lc 7.3 | Not readable |
| #153D4C text on white | 11.64:1 | AAA | Lc 96.6 | Preferred for body text |
| #153D4C text on black | 1.80:1 | 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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C6D4
oklch(80.8% 0.039 226.9)
-
Step 400
400
#77A9BE
oklch(70.7% 0.061 226)
-
Step 500
500
#5193AE
oklch(63% 0.079 226.7)
-
Step 600
600
#317D9A
oklch(55.5% 0.086 226.8)
-
Step 700
700
#236A83
oklch(49.2% 0.079 225.5)
-
Step 800
800
#1F566B
oklch(42.7% 0.066 226.9)
-
Step 900
900 (this color)
#153D4C
oklch(33.9% 0.051 226.2)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#153D4C 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) | #353C4D | 0.039 |
| Deuteranopia (no green cones) | #2D364C | 0.034 |
| Tritanopia (no blue cones) | #004142 | 0.029 |
| Achromatopsia (no color) | #383838 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #153D4C
#153D4C
oklch(33.9% 0.051 226.2)
- #4E2F20
#4E2F20
oklch(34% 0.052 46.3)
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 #153D4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.011
- Midnight Green #073B4C ΔE 0.012
- Charcoal #264653 ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.037
- Gunmetal #293241 ΔE 0.039
- Onyx #343A40 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.044
- Dark Teal #014D4E ΔE 0.053
Use #153D4C 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.