#1E4B9E
Closest named color: Cobalt (#1E488F). oklch(43.2% 0.144 261.3), rgb(30, 75, 158).
Aa
White text reads best on this color (8.21:1).
About this color
#1E4B9E is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.144 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.025 away. White text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #1E4B9E |
| RGB | rgb(30, 75, 158) |
| HSL | hsl(219, 68%, 37%) |
| OKLCH | oklch(43.2% 0.144 261.3) |
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 #1E4B9E | 8.21:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #1E4B9E | 2.55:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #1E4B9E text on white | 8.21:1 | AAA | Lc 87.9 | Fine for body text |
| #1E4B9E text on black | 2.55:1 | Fails | Lc -14.2 | 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 800.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAF9
oklch(88.5% 0.047 261.4)
-
Step 300
300
#A2C2F8
oklch(81% 0.084 260.7)
-
Step 400
400
#70A0F4
oklch(70.8% 0.134 261)
-
Step 500
500
#4A85F0
oklch(63.1% 0.172 261.2)
-
Step 600
600
#2D6CDF
oklch(55.7% 0.187 261.2)
-
Step 700
700
#2059C1
oklch(49.1% 0.174 261.2)
-
Step 800
800 (this color)
#1E4B9E
oklch(43.2% 0.144 261.3)
-
Step 900
900
#1D3E7C
oklch(37.6% 0.112 261.6)
-
Step 950
950
#112549
oklch(27% 0.072 261.1)
#1E4B9E 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) | #1255A1 | 0.027 |
| Deuteranopia (no green cones) | #00499C | 0.017 |
| Tritanopia (no blue cones) | #005F6D | 0.111 |
| Achromatopsia (no color) | #4F4F4F | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E4B9E
#1E4B9E
oklch(43.2% 0.144 261.3)
- #694A00
#694A00
oklch(43.2% 0.089 81)
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 #1E4B9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.025
- Dusk Blue #26538D ΔE 0.039
- Light Navy #155084 ΔE 0.048
- Blueberry #464196 ΔE 0.050
- Sapphire #2138AB ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.063
Use #1E4B9E 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.