#1D4053
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.4% 0.052 234.6), rgb(29, 64, 83).
Aa
White text reads best on this color (10.99:1).
About this color
#1D4053 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.052 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.017 away. White text reads best on it, at 10.99:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.91:1 |
| White text | 10.99:1 |
Values
| HEX | #1D4053 |
| RGB | rgb(29, 64, 83) |
| HSL | hsl(201, 48%, 22%) |
| OKLCH | oklch(35.4% 0.052 234.6) |
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 #1D4053 | 10.99:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #1D4053 | 1.91:1 | Fails | Lc 8.6 | Not readable |
| #1D4053 text on white | 10.99:1 | AAA | Lc 95.3 | Preferred for body text |
| #1D4053 text on black | 1.91:1 | Fails | Lc -7.4 | 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
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#A9C5D7
oklch(80.8% 0.04 236.2)
-
Step 400
400
#7AA8C2
oklch(70.8% 0.062 233.6)
-
Step 500
500
#5691B3
oklch(63% 0.08 235.3)
-
Step 600
600
#397B9F
oklch(55.6% 0.087 235.2)
-
Step 700
700
#2A6888
oklch(49.2% 0.081 234.4)
-
Step 800
800
#25556E
oklch(42.8% 0.066 234)
-
Step 900
900 (this color)
#1D4053
oklch(35.4% 0.052 234.6)
-
Step 950
950
#152934
oklch(26.9% 0.033 233.9)
#1D4053 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) | #373F54 | 0.033 |
| Deuteranopia (no green cones) | #2F3A53 | 0.027 |
| Tritanopia (no blue cones) | #004546 | 0.038 |
| Achromatopsia (no color) | #3C3C3C | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4053
#1D4053
oklch(35.4% 0.052 234.6)
- #513420
#513420
oklch(35.5% 0.053 54.8)
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 #1D4053, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.017
- Charcoal #264653 ΔE 0.024
- Dark Grey Blue #29465B ΔE 0.027
- Midnight Green #073B4C ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.039
- Onyx #343A40 ΔE 0.041
- Dark Teal #014D4E ΔE 0.048
- Gunmetal #293241 ΔE 0.048
Use #1D4053 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.