#1D5593
Closest named color: Dusk Blue (#26538D). oklch(44.7% 0.117 253.8), rgb(29, 85, 147).
Aa
White text reads best on this color (7.57:1).
About this color
#1D5593 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.117 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.011 away. White text reads best on it, at 7.57:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #1D5593 |
| RGB | rgb(29, 85, 147) |
| HSL | hsl(212, 67%, 35%) |
| OKLCH | oklch(44.7% 0.117 253.8) |
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 #1D5593 | 7.57:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #1D5593 | 2.77:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #1D5593 text on white | 7.57:1 | AAA | Lc 85.9 | Fine for body text |
| #1D5593 text on black | 2.77:1 | Fails | Lc -16.1 | 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
#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
#A2C4ED
oklch(81% 0.069 253.4)
-
Step 400
400
#6FA4E3
oklch(70.7% 0.109 253.5)
-
Step 500
500
#478BDB
oklch(63% 0.14 254)
-
Step 600
600
#2574C9
oklch(55.7% 0.152 253.7)
-
Step 700
700
#1761AE
oklch(49.2% 0.141 253.7)
-
Step 800
800 (this color)
#1D5593
oklch(44.7% 0.117 253.8)
-
Step 900
900
#1A4270
oklch(37.6% 0.091 254)
-
Step 950
950
#102742
oklch(27% 0.058 253.9)
#1D5593 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) | #375A95 | 0.030 |
| Deuteranopia (no green cones) | #224F92 | 0.017 |
| Tritanopia (no blue cones) | #00646D | 0.088 |
| Achromatopsia (no color) | #545454 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5593
#1D5593
oklch(44.7% 0.117 253.8)
- #734B00
#734B00
oklch(44.7% 0.095 74.1)
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 #1D5593, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.011
- Light Navy #155084 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.035
- Cobalt #1E488F ΔE 0.037
- Peacock Blue #016795 ΔE 0.052
- Twilight #4E518B ΔE 0.054
Use #1D5593 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.