#1E4790
Closest named color: Cobalt (#1E488F). oklch(41.3% 0.13 260.9), rgb(30, 71, 144).
Aa
White text reads best on this color (8.90:1).
About this color
#1E4790 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.130 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.003 away. White text reads best on it, at 8.90:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #1E4790 |
| RGB | rgb(30, 71, 144) |
| HSL | hsl(218, 66%, 34%) |
| OKLCH | oklch(41.3% 0.13 260.9) |
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 #1E4790 | 8.90:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #1E4790 | 2.35:1 | Fails | Lc 14.0 | Not readable |
| #1E4790 text on white | 8.90:1 | AAA | Lc 90.0 | Fine for body text |
| #1E4790 text on black | 2.35:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A5C2F2
oklch(80.9% 0.075 260.4)
-
Step 400
400
#75A0EC
oklch(70.6% 0.122 261.3)
-
Step 500
500
#5187E6
oklch(63.2% 0.155 260.9)
-
Step 600
600
#356ED4
oklch(55.6% 0.168 261)
-
Step 700
700
#285BB8
oklch(49% 0.157 261.2)
-
Step 800
800 (this color)
#1E4790
oklch(41.3% 0.13 260.9)
-
Step 900
900
#213F76
oklch(37.6% 0.101 261.4)
-
Step 950
950
#142645
oklch(27.1% 0.063 260.6)
#1E4790 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) | #1B4F93 | 0.022 |
| Deuteranopia (no green cones) | #00458F | 0.018 |
| Tritanopia (no blue cones) | #005964 | 0.103 |
| Achromatopsia (no color) | #4A4A4A | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E4790
#1E4790
oklch(41.3% 0.13 260.9)
- #624500
#624500
oklch(41.2% 0.085 81.2)
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 #1E4790, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.003
- Light Navy #155084 ΔE 0.035
- Dusk Blue #26538D ΔE 0.037
- Twilight Blue #0A437A ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.048
- Blueberry #464196 ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.056
- Sapphire #2138AB ΔE 0.058
Use #1E4790 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.