#1D4367
Closest named color: Dark Grey Blue (#29465B). oklch(37.4% 0.076 249.5), rgb(29, 67, 103).
Aa
White text reads best on this color (10.23:1).
About this color
#1D4367 is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.076 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 10.23:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.05:1 |
| White text | 10.23:1 |
Values
| HEX | #1D4367 |
| RGB | rgb(29, 67, 103) |
| HSL | hsl(209, 56%, 26%) |
| OKLCH | oklch(37.4% 0.076 249.5) |
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 #1D4367 | 10.23:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #1D4367 | 2.05:1 | Fails | Lc 10.4 | Not readable |
| #1D4367 text on white | 10.23:1 | AAA | Lc 93.6 | Preferred for body text |
| #1D4367 text on black | 2.05:1 | Fails | Lc -9.0 | 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
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A5C4E4
oklch(80.8% 0.056 249.4)
-
Step 400
400
#74A5D7
oklch(70.7% 0.091 249.7)
-
Step 500
500
#4D8ECD
oklch(63.1% 0.117 249.5)
-
Step 600
600
#2E77BA
oklch(55.7% 0.127 249.6)
-
Step 700
700
#2064A0
oklch(49.2% 0.117 249.4)
-
Step 800
800
#1D5282
oklch(42.9% 0.097 249.4)
-
Step 900
900 (this color)
#1D4367
oklch(37.4% 0.076 249.5)
-
Step 950
950
#12283D
oklch(27% 0.048 249)
#1D4367 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) | #334569 | 0.027 |
| Deuteranopia (no green cones) | #293E66 | 0.018 |
| Tritanopia (no blue cones) | #004B50 | 0.057 |
| Achromatopsia (no color) | #414141 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4367
#1D4367
oklch(37.4% 0.076 249.5)
- #5A3808
#5A3808
oklch(37.3% 0.076 69.2)
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 #1D4367, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Twilight Blue #0A437A ΔE 0.034
- Charcoal #264653 ΔE 0.039
- Marine Blue #01386A ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.047
- Prussian Blue #1D3557 ΔE 0.048
- Midnight Green #073B4C ΔE 0.055
- Light Navy #155084 ΔE 0.057
Use #1D4367 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.