#1D5F8A
Closest named color: Light Navy Blue (#2E5A88). oklch(46.6% 0.095 242), rgb(29, 95, 138).
Aa
White text reads best on this color (6.87:1).
About this color
#1D5F8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.095 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.017 away. White text reads best on it, at 6.87:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #1D5F8A |
| RGB | rgb(29, 95, 138) |
| HSL | hsl(204, 65%, 33%) |
| OKLCH | oklch(46.6% 0.095 242) |
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 #1D5F8A | 6.87:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #1D5F8A | 3.05:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #1D5F8A text on white | 6.87:1 | AA | Lc 83.4 | Fine for body text |
| #1D5F8A text on black | 3.05:1 | AA large text | Lc -18.5 | 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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A7C5DC
oklch(80.9% 0.046 241.2)
-
Step 400
400
#77A7CB
oklch(70.8% 0.074 241.5)
-
Step 500
500
#5290BE
oklch(63.1% 0.095 242.4)
-
Step 600
600
#347AAA
oklch(55.7% 0.102 241.9)
-
Step 700
700 (this color)
#1D5F8A
oklch(46.6% 0.095 242)
-
Step 800
800
#215476
oklch(42.8% 0.078 241.2)
-
Step 900
900
#21455F
oklch(37.6% 0.061 242.2)
-
Step 950
950
#142938
oklch(27.1% 0.039 241.3)
#1D5F8A 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) | #4B608C | 0.046 |
| Deuteranopia (no green cones) | #3C5689 | 0.035 |
| Tritanopia (no blue cones) | #006A6E | 0.066 |
| Achromatopsia (no color) | #5A5A5A | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D5F8A
#1D5F8A
oklch(46.6% 0.095 242)
- #7F4C16
#7F4C16
oklch(46.6% 0.095 62.3)
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 #1D5F8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.017
- Peacock Blue #016795 ΔE 0.026
- Denim #3B638C ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.032
- Dusk Blue #26538D ΔE 0.037
- Deep Sea Blue #015482 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.045
Use #1D5F8A 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.