#1E4972
Closest named color: Twilight Blue (#0A437A). oklch(39.6% 0.084 249.9), rgb(30, 73, 114).
Aa
White text reads best on this color (9.32:1).
About this color
#1E4972 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.084 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.029 away. White text reads best on it, at 9.32:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.25:1 |
| White text | 9.32:1 |
Values
| HEX | #1E4972 |
| RGB | rgb(30, 73, 114) |
| HSL | hsl(209, 58%, 28%) |
| OKLCH | oklch(39.6% 0.084 249.9) |
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 #1E4972 | 9.32:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #1E4972 | 2.25:1 | Fails | Lc 12.7 | Not readable |
| #1E4972 text on white | 9.32:1 | AAA | Lc 91.3 | Preferred for body text |
| #1E4972 text on black | 2.25:1 | Fails | Lc -11.1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A2C4E9
oklch(80.8% 0.064 250.8)
-
Step 400
400
#6EA5DD
oklch(70.6% 0.101 249.9)
-
Step 500
500
#458ED4
oklch(63.2% 0.129 249.7)
-
Step 600
600
#2076C1
oklch(55.5% 0.14 249.9)
-
Step 700
700
#1063A7
oklch(49.1% 0.131 249.9)
-
Step 800
800
#135187
oklch(42.7% 0.108 249.9)
-
Step 900
900 (this color)
#1E4972
oklch(39.6% 0.084 249.9)
-
Step 950
950
#10283F
oklch(27% 0.053 249.5)
#1E4972 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) | #374B74 | 0.029 |
| Deuteranopia (no green cones) | #2B4371 | 0.020 |
| Tritanopia (no blue cones) | #005358 | 0.064 |
| Achromatopsia (no color) | #474747 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E4972
#1E4972
oklch(39.6% 0.084 249.9)
- #633D03
#633D03
oklch(39.6% 0.084 69.6)
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 #1E4972, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.029
- Light Navy #155084 ΔE 0.033
- Deep Sea Blue #015482 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.039
- Cobalt #1E488F ΔE 0.050
- Dusk Blue #26538D ΔE 0.052
- Charcoal #264653 ΔE 0.052
- Marine Blue #01386A ΔE 0.060
Use #1E4972 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.