#1E4172
Closest named color: Twilight Blue (#0A437A). oklch(37.6% 0.093 257.3), rgb(30, 65, 114).
Aa
White text reads best on this color (10.22:1).
About this color
#1E4172 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.093 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.018 away. White text reads best on it, at 10.22:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.05:1 |
| White text | 10.22:1 |
Values
| HEX | #1E4172 |
| RGB | rgb(30, 65, 114) |
| HSL | hsl(215, 58%, 28%) |
| OKLCH | oklch(37.6% 0.093 257.3) |
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 #1E4172 | 10.22:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #1E4172 | 2.05:1 | Fails | Lc 10.5 | Not readable |
| #1E4172 text on white | 10.22:1 | AAA | Lc 93.5 | Preferred for body text |
| #1E4172 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF8
oklch(93.7% 0.02 257.5)
-
Step 200
200
#C9DBF3
oklch(88.5% 0.038 255.6)
-
Step 300
300
#A4C3EE
oklch(80.9% 0.07 256.6)
-
Step 400
400
#73A2E6
oklch(70.7% 0.112 257.6)
-
Step 500
500
#4D89DF
oklch(63% 0.145 257.6)
-
Step 600
600
#2F71CC
oklch(55.5% 0.156 257.4)
-
Step 700
700
#225FB1
oklch(49.2% 0.145 257.2)
-
Step 800
800
#1E4E8F
oklch(42.8% 0.119 257.1)
-
Step 900
900 (this color)
#1E4172
oklch(37.6% 0.093 257.3)
-
Step 950
950
#122643
oklch(26.9% 0.06 257.7)
#1E4172 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) | #2A4574 | 0.019 |
| Deuteranopia (no green cones) | #1C3D71 | 0.013 |
| Tritanopia (no blue cones) | #004C54 | 0.072 |
| Achromatopsia (no color) | #414141 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E4172
#1E4172
oklch(37.6% 0.093 257.3)
- #583B00
#583B00
oklch(37.6% 0.078 77.7)
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 #1E4172, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.018
- Marine Blue #01386A ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.048
- Light Navy #155084 ΔE 0.049
- Cobalt #1E488F ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.058
- Charcoal #264653 ΔE 0.060
Use #1E4172 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.