#1A3D4F
Closest named color: Dark Blue Grey (#1F3B4D). oklch(34.3% 0.051 233.4), rgb(26, 61, 79).
Aa
White text reads best on this color (11.51:1).
About this color
#1A3D4F is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.051 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.007 away. White text reads best on it, at 11.51:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.82:1 |
| White text | 11.51:1 |
Values
| HEX | #1A3D4F |
| RGB | rgb(26, 61, 79) |
| HSL | hsl(200, 50%, 21%) |
| OKLCH | oklch(34.3% 0.051 233.4) |
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 #1A3D4F | 11.51:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #1A3D4F | 1.82:1 | Fails | Lc 7.5 | Not readable |
| #1A3D4F text on white | 11.51:1 | AAA | Lc 96.4 | Preferred for body text |
| #1A3D4F text on black | 1.82:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C5D6
oklch(80.8% 0.039 234.6)
-
Step 400
400
#7AA8C1
oklch(70.8% 0.061 232.5)
-
Step 500
500
#5692B2
oklch(63.2% 0.079 233.2)
-
Step 600
600
#397B9D
oklch(55.5% 0.085 233.7)
-
Step 700
700
#2B6887
oklch(49.1% 0.08 233.9)
-
Step 800
800
#25556D
oklch(42.7% 0.065 232.9)
-
Step 900
900 (this color)
#1A3D4F
oklch(34.3% 0.051 233.4)
-
Step 950
950
#152934
oklch(26.9% 0.033 233.9)
#1A3D4F 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) | #343C50 | 0.033 |
| Deuteranopia (no green cones) | #2D374F | 0.028 |
| Tritanopia (no blue cones) | #004243 | 0.035 |
| Achromatopsia (no color) | #393939 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A3D4F
#1A3D4F
oklch(34.3% 0.051 233.4)
- #4D311E
#4D311E
oklch(34.2% 0.051 54.3)
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 #1A3D4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.007
- Midnight Green #073B4C ΔE 0.017
- Prussian Blue #1D3557 ΔE 0.033
- Charcoal #264653 ΔE 0.034
- Onyx #343A40 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.039
- Gunmetal #293241 ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.053
Use #1A3D4F 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.