#191F30
Closest named color: Dark (#1B2431). oklch(24.2% 0.034 268.9), rgb(25, 31, 48).
Aa
White text reads best on this color (16.40:1).
About this color
#191F30 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.034 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.018 away. White text reads best on it, at 16.40:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.28:1 |
| White text | 16.40:1 |
Values
| HEX | #191F30 |
| RGB | rgb(25, 31, 48) |
| HSL | hsl(224, 32%, 14%) |
| OKLCH | oklch(24.2% 0.034 268.9) |
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 #191F30 | 16.40:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #191F30 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #191F30 text on white | 16.40:1 | AAA | Lc 103.3 | Preferred for body text |
| #191F30 text on black | 1.28:1 | 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 950.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D3D9E8
oklch(88.5% 0.022 268.4)
-
Step 300
300
#B6C0DB
oklch(80.9% 0.04 269.4)
-
Step 400
400
#909FCA
oklch(70.6% 0.065 269.7)
-
Step 500
500
#7588BC
oklch(63.2% 0.082 268.6)
-
Step 600
600
#5E71A8
oklch(55.7% 0.089 268.9)
-
Step 700
700
#4D5E90
oklch(49% 0.083 268.9)
-
Step 800
800
#3F4D75
oklch(42.7% 0.069 268.7)
-
Step 900
900
#36405E
oklch(37.6% 0.053 269.6)
-
Step 950
950 (this color)
#191F30
oklch(24.2% 0.034 268.9)
#191F30 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) | #192031 | 0.004 |
| Deuteranopia (no green cones) | #171E30 | 0.005 |
| Tritanopia (no blue cones) | #122225 | 0.029 |
| Achromatopsia (no color) | #1F1F1F | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191F30
#191F30
oklch(24.2% 0.034 268.9)
- #261F0C
#261F0C
oklch(24.2% 0.033 89.6)
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 #191F30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.018
- Rich Black #0D1B2A ΔE 0.027
- Oxford Blue #1B263B ΔE 0.029
- Jet #212529 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.063
- Gunmetal #293241 ΔE 0.074
- Navy Blue #001146 ΔE 0.076
- Rich Navy #001219 ΔE 0.077
Use #191F30 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.