#153E5D
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.1% 0.071 244.8), rgb(21, 62, 93).
Aa
White text reads best on this color (11.17:1).
About this color
#153E5D is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.071 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.028 away. White text reads best on it, at 11.17:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.87:1 |
| White text | 11.17:1 |
Values
| HEX | #153E5D |
| RGB | rgb(21, 62, 93) |
| HSL | hsl(206, 63%, 22%) |
| OKLCH | oklch(35.1% 0.071 244.8) |
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 #153E5D | 11.17:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #153E5D | 1.87:1 | Fails | Lc 8.3 | Not readable |
| #153E5D text on white | 11.17:1 | AAA | Lc 95.6 | Preferred for body text |
| #153E5D text on black | 1.87:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADCEC
oklch(88.6% 0.029 244.9)
-
Step 300
300
#A5C5E1
oklch(80.9% 0.053 244.9)
-
Step 400
400
#73A6D2
oklch(70.6% 0.085 245.4)
-
Step 500
500
#4B90C6
oklch(63.2% 0.108 244.3)
-
Step 600
600
#2A79B3
oklch(55.6% 0.117 244.7)
-
Step 700
700
#1B669A
oklch(49.2% 0.109 244.3)
-
Step 800
800
#1A537D
oklch(42.7% 0.091 244.9)
-
Step 900
900 (this color)
#153E5D
oklch(35.1% 0.071 244.8)
-
Step 950
950
#12293B
oklch(27.2% 0.044 244.1)
#153E5D 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) | #303F5E | 0.031 |
| Deuteranopia (no green cones) | #26385C | 0.023 |
| Tritanopia (no blue cones) | #004649 | 0.052 |
| Achromatopsia (no color) | #3B3B3B | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #153E5D
#153E5D
oklch(35.1% 0.071 244.8)
- #54320B
#54320B
oklch(35.2% 0.071 64.5)
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 #153E5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.028
- Midnight Green #073B4C ΔE 0.033
- Marine Blue #01386A ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.036
- Charcoal #264653 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.050
- Marine #042E60 ΔE 0.056
Use #153E5D 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.