#1E4977
Closest named color: Twilight Blue (#0A437A). oklch(40% 0.091 252.4), rgb(30, 73, 119).
Aa
White text reads best on this color (9.23:1).
About this color
#1E4977 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.091 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.025 away. White text reads best on it, at 9.23:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #1E4977 |
| RGB | rgb(30, 73, 119) |
| HSL | hsl(211, 60%, 29%) |
| OKLCH | oklch(40% 0.091 252.4) |
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 #1E4977 | 9.23:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #1E4977 | 2.27:1 | Fails | Lc 12.9 | Not readable |
| #1E4977 text on white | 9.23:1 | AAA | Lc 91.0 | Preferred for body text |
| #1E4977 text on black | 2.27:1 | Fails | Lc -11.3 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A1C4EC
oklch(80.9% 0.068 252)
-
Step 400
400
#6DA4E3
oklch(70.6% 0.11 252.7)
-
Step 500
500
#438CDB
oklch(63.1% 0.14 252.5)
-
Step 600
600
#1E74C9
oklch(55.5% 0.153 252.7)
-
Step 700
700
#0E61AE
oklch(49% 0.143 252.7)
-
Step 800
800
#11508D
oklch(42.8% 0.118 252.4)
-
Step 900
900 (this color)
#1E4977
oklch(40% 0.091 252.4)
-
Step 950
950
#0F2742
oklch(26.9% 0.059 253.1)
#1E4977 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) | #344C79 | 0.026 |
| Deuteranopia (no green cones) | #274476 | 0.016 |
| Tritanopia (no blue cones) | #00545A | 0.070 |
| Achromatopsia (no color) | #474747 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E4977
#1E4977
oklch(40% 0.091 252.4)
- #633F00
#633F00
oklch(40% 0.085 72.9)
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 #1E4977, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.025
- Light Navy #155084 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.035
- Cobalt #1E488F ΔE 0.041
- Dusk Blue #26538D ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.059
- Charcoal #264653 ΔE 0.061
Use #1E4977 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.