#1D5877
Closest named color: Deep Sea Blue (#015482). oklch(43.7% 0.078 235.8), rgb(29, 88, 119).
Aa
White text reads best on this color (7.73:1).
About this color
#1D5877 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.078 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.028 away. White text reads best on it, at 7.73:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.71:1 |
| White text | 7.73:1 |
Values
| HEX | #1D5877 |
| RGB | rgb(29, 88, 119) |
| HSL | hsl(201, 61%, 29%) |
| OKLCH | oklch(43.7% 0.078 235.8) |
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 #1D5877 | 7.73:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #1D5877 | 2.71:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #1D5877 text on white | 7.73:1 | AAA | Lc 86.6 | Fine for body text |
| #1D5877 text on black | 2.71:1 | Fails | Lc -15.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DB
oklch(80.9% 0.046 236.1)
-
Step 400
400
#73A8C8
oklch(70.6% 0.073 235.7)
-
Step 500
500
#4B92BA
oklch(63% 0.093 235.6)
-
Step 600
600
#297CA7
oklch(55.7% 0.102 235.8)
-
Step 700
700
#1A688F
oklch(49.1% 0.095 236)
-
Step 800
800 (this color)
#1D5877
oklch(43.7% 0.078 235.8)
-
Step 900
900
#1C465E
oklch(37.6% 0.062 236.8)
-
Step 950
950
#122937
oklch(26.9% 0.039 237.4)
#1D5877 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) | #495778 | 0.047 |
| Deuteranopia (no green cones) | #3D4F76 | 0.039 |
| Tritanopia (no blue cones) | #006063 | 0.050 |
| Achromatopsia (no color) | #535353 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5877
#1D5877
oklch(43.7% 0.078 235.8)
- #724523
#724523
oklch(43.6% 0.078 55.9)
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 #1D5877, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.033
- YInMn Blue #415A77 ΔE 0.037
- Petrol #005F6A ΔE 0.037
- Light Navy #155084 ΔE 0.037
- Dusk Blue #26538D ΔE 0.044
- Deep Teal #00555A ΔE 0.052
- Denim #3B638C ΔE 0.055
Use #1D5877 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.