#12749D
Closest named color: Ocean Blue (#03719C). oklch(52.7% 0.104 233.2), rgb(18, 116, 157).
Aa
White text reads best on this color (5.23:1).
About this color
#12749D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.104 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.010 away. White text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 4.01:1 |
| White text | 5.23:1 |
Values
| HEX | #12749D |
| RGB | rgb(18, 116, 157) |
| HSL | hsl(198, 79%, 34%) |
| OKLCH | oklch(52.7% 0.104 233.2) |
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 #12749D | 5.23:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #12749D | 4.01:1 | AA large text | Lc 28.5 | Dividers and decoration only |
| #12749D text on white | 5.23:1 | AA | Lc 75.5 | Fine for body text |
| #12749D text on black | 4.01:1 | AA large text | Lc -26.2 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A4C6DA
oklch(80.8% 0.046 233.9)
-
Step 400
400
#70A9C8
oklch(70.7% 0.075 233.1)
-
Step 500
500
#4693BA
oklch(63.1% 0.096 233.2)
-
Step 600
600 (this color)
#12749D
oklch(52.7% 0.104 233.2)
-
Step 700
700
#10698E
oklch(49.1% 0.096 232.9)
-
Step 800
800
#135674
oklch(42.8% 0.08 233.2)
-
Step 900
900
#19475D
oklch(37.7% 0.062 232.6)
-
Step 950
950
#102A37
oklch(27.1% 0.04 232.6)
#12749D 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) | #5F739F | 0.065 |
| Deuteranopia (no green cones) | #4E679C | 0.054 |
| Tritanopia (no blue cones) | #007F82 | 0.063 |
| Achromatopsia (no color) | #6C6C6C | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12749D
#12749D
oklch(52.7% 0.104 233.2)
- #99582B
#99582B
oklch(52.7% 0.104 53)
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 #12749D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.010
- Sea Blue #047495 ΔE 0.014
- Muted Blue #3B719F ΔE 0.026
- Ocean #017B92 ΔE 0.031
- Nice Blue #107AB0 ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.033
- Dull Blue #49759C ΔE 0.039
- Peacock Blue #016795 ΔE 0.040
Use #12749D 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.