#1E4F9D
Closest named color: Cobalt (#1E488F). oklch(44% 0.138 259.5), rgb(30, 79, 157).
Aa
White text reads best on this color (7.89:1).
About this color
#1E4F9D is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.138 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.029 away. White text reads best on it, at 7.89:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.66:1 |
| White text | 7.89:1 |
Values
| HEX | #1E4F9D |
| RGB | rgb(30, 79, 157) |
| HSL | hsl(217, 68%, 37%) |
| OKLCH | oklch(44% 0.138 259.5) |
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 #1E4F9D | 7.89:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #1E4F9D | 2.66:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #1E4F9D text on white | 7.89:1 | AAA | Lc 86.9 | Fine for body text |
| #1E4F9D text on black | 2.66:1 | Fails | Lc -15.2 | Dividers and decoration only |
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
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DAF7
oklch(88.4% 0.045 259.9)
-
Step 300
300
#A2C2F5
oklch(80.9% 0.081 259.6)
-
Step 400
400
#6FA1F0
oklch(70.7% 0.128 259.2)
-
Step 500
500
#4987EB
oklch(63.2% 0.164 259.5)
-
Step 600
600
#2A6EDA
oklch(55.6% 0.179 259.6)
-
Step 700
700
#1D5BBD
oklch(49.1% 0.167 259.7)
-
Step 800
800 (this color)
#1E4F9D
oklch(44% 0.138 259.5)
-
Step 900
900
#1B3F79
oklch(37.5% 0.107 259.6)
-
Step 950
950
#112647
oklch(27.1% 0.067 259.1)
#1E4F9D 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) | #2157A0 | 0.023 |
| Deuteranopia (no green cones) | #004C9B | 0.018 |
| Tritanopia (no blue cones) | #00626E | 0.107 |
| Achromatopsia (no color) | #515151 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E4F9D
#1E4F9D
oklch(44% 0.138 259.5)
- #6D4C00
#6D4C00
oklch(44.1% 0.091 79.9)
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 #1E4F9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.029
- Dusk Blue #26538D ΔE 0.031
- Light Navy #155084 ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.053
- Blueberry #464196 ΔE 0.054
- Sapphire #2138AB ΔE 0.062
Use #1E4F9D 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.